OCULAR FINDINGS AND SELECT OPHTHALMIC DIAGNOSTIC TESTS IN CAPTIVE AMERICAN WHITE PELICANS (PELECANUS ERYTHRORHYNCHOS)
نویسندگان
چکیده
منابع مشابه
Influence of Climate Change on Productivity of American White Pelicans, Pelecanus erythrorhynchos
In the past decade, severe weather and West Nile virus were major causes of chick mortality at American white pelican (Pelecanus erythrorhynchos) colonies in the northern plains of North America. At one of these colonies, Chase Lake National Wildlife Refuge in North Dakota, spring arrival by pelicans has advanced approximately 16 days over a period of 44 years (1965-2008). We examined phenology...
متن کاملOphthalmic Instruments and Diagnostic Tests
The cover test is done to confirm the presence of a manifest squint. The patient is asked to look at the fixation target (a flashlight should never be used as a fixation target because it fails to control accommodation—an accommodative fixation target held at 33 cm is used for near and the Snellen 6/9 visual acuity symbol is used for distance fixation). The apparently fixating eye is then cover...
متن کاملExperimental Bolbophorus damnificus (Digenea: Bolbophoridae) infections in piscivorous birds.
In order to determine potential definitive hosts of the digenetic trematode, Bolbophorus damnificus, two American White Pelicans (Pelecanus erythrorhynchos), two Double-crested Cormorants (Phalacrocorax auritus), two Great Blue Herons (Ardea herodias), and two Great Egrets (Ardea alba) were captured, treated with praziquantel, and fed channel catfish (Ictalurus punctatus) infected with B. damni...
متن کاملInfestations of Piagetiella titan (Menoponidae: Mallophaga) on juvenile white pelicans (Pelecanus nocrotalus, L.) in Urmia Lake National Park, northwest Iran.
Pelecaniformes are large water birds feeding by hunting fish and living usually in the sea and in fresh water. Ectoparasitic lice of the genus Piagetiella are interesting from an ecological standpoint as they are found in the pouches of pelicans. Unlike chewing lice, which live on the body surface of the host, P. titan lives in the oral cavity of white pelicans (Pelecanus nocrotalus, L.). This ...
متن کاملMitochondrial evidence for panmixia despite perceived barriers to gene flow in a widely distributed waterbird.
We examined the mitochondrial genetic structure of American white pelicans (Pelecanus erythrorhynchos) to: 1) verify or refute whether American white pelicans are panmictic and 2) understand if any lack of genetic structure is the result of contemporary processes or historical phenomena. Sequence analysis of mitochondrial DNA control region haplotypes of 367 individuals from 19 colonies located...
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ژورنال
عنوان ژورنال: Journal of Zoo and Wildlife Medicine
سال: 2017
ISSN: 1042-7260,1937-2825
DOI: 10.1638/2016-0256.1